Yavin

Improvements:

• Add collect_replica_metrics config option to the MySQL monitor. When this option is set to False (for backward compatibility reasons it defaults to True) we don't try to collect replica metrics and as such, user which is used to connect to the database only needs PROCESS permissions and nothing else.
• Add support for specifying new server_url config option for each session worker. This allows user to configure different session workers to use different server urls (e.g. some workers send data to agent.scalyr.com and other send data to eu.scalyr.com).

Other:

• Update agent to also log response message field value when we receive error/client/badParam status code from the API to make troubleshooting easier.

Docker Images:

• Docker images now utilize Python 3.8 (in the past they used Python 2.7).
• Docker images are now also produced and pushed to the registry for the linux/arm64 and linux/arm/v7 architecture.
• Docker image now includes pympler dependency by default. This means memory profiling can be enabled via the agent configuration option without the need to modify and re-build the Docker image.
• ujson dependency has been removed from the Docker image in favor of orjson which is more performant and now used by default.
• Alpine based Docker images which are 50% small than regular Debian buster-slim based ones are now available. Alpine based images contains -alpine tag name suffix.